H04L2025/03566

DISCRETE-TIME LINEAR EQUALIZER FOR DISCRETE-TIME ANALOG FRONT-END
20240372758 · 2024-11-07 ·

An apparatus comprises a discrete-time linear equalizer circuit. The discrete-time linear equalizer circuit comprises a sample and hold circuitry including multiple switched-capacitor circuits. The multiple switched-capacitor circuits include at least a switched-capacitor circuit of a pre-cursor tap, a switched-capacitor circuit of a cursor tap, and a switched-capacitor circuit of a post-cursor tap. A clock-driven switch circuitry is to switchably couple a capacitor of the switched-capacitor circuit of the pre-cursor tap to a signal input over a first time period, a capacitor of the switched-capacitor circuit of the cursor tap to the signal input over a second time period, and a capacitor of the switched-capacitor circuit of the post-cursor tap to the signal input over a third time period. The clock-driven switch circuitry is to switchably couple the capacitor of the switched-capacitor circuit of the cursor tap to an output, and the capacitors of the SHCs of the pre-cursor and post-cursor taps in a closed feedback loop with the capacitor of the switched-capacitor circuit of the cursor tap, over a fourth time period.

Discrete-time linear equalizer for discrete-time analog front-end

An apparatus comprises a discrete-time linear equalizer circuit. The discrete-time linear equalizer circuit comprises a sample and hold circuitry including multiple switched-capacitor circuits. The multiple switched-capacitor circuits include at least a switched-capacitor circuit of a pre-cursor tap, a switched-capacitor circuit of a cursor tap, and a switched-capacitor circuit of a post-cursor tap. A clock-driven switch circuitry is to switchably couple a capacitor of the switched-capacitor circuit of the pre-cursor tap to a signal input over a first time period, a capacitor of the switched-capacitor circuit of the cursor tap to the signal input over a second time period, and a capacitor of the switched-capacitor circuit of the post-cursor tap to the signal input over a third time period. The clock-driven switch circuitry is to switchably couple the capacitor of the switched-capacitor circuit of the cursor tap to an output, and the capacitors of the SHCs of the pre-cursor and post-cursor taps in a closed feedback loop with the capacitor of the switched-capacitor circuit of the cursor tap, over a fourth time period.

DISCRETE-TIME LINEAR EQUALIZER FOR DISCRETE-TIME ANALOG FRONT-END
20260046180 · 2026-02-12 ·

An apparatus comprises a discrete-time linear equalizer circuit. The discrete-time linear equalizer circuit comprises a sample and hold circuitry including multiple switched-capacitor circuits. The multiple switched-capacitor circuits include at least a switched-capacitor circuit of a pre-cursor tap, a switched-capacitor circuit of a cursor tap, and a switched-capacitor circuit of a post-cursor tap. A clock-driven switch circuitry is to switchably couple a capacitor of the switched-capacitor circuit of the pre-cursor tap to a signal input over a first time period, a capacitor of the switched-capacitor circuit of the cursor tap to the signal input over a second time period, and a capacitor of the switched-capacitor circuit of the post-cursor tap to the signal input over a third time period. The clock-driven switch circuitry is to switchably couple the capacitor of the switched-capacitor circuit of the cursor tap to an output, and the capacitors of the SHCs of the pre-cursor and post-cursor taps in a closed feedback loop with the capacitor of the switched-capacitor circuit of the cursor tap, over a fourth time period.